EP3693787A1 - Optisches system und verfahren zur selbst-heilung einer oberflaeche einer optischen linse eines optischen systems - Google Patents

Optisches system und verfahren zur selbst-heilung einer oberflaeche einer optischen linse eines optischen systems Download PDF

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Publication number
EP3693787A1
EP3693787A1 EP19305165.3A EP19305165A EP3693787A1 EP 3693787 A1 EP3693787 A1 EP 3693787A1 EP 19305165 A EP19305165 A EP 19305165A EP 3693787 A1 EP3693787 A1 EP 3693787A1
Authority
EP
European Patent Office
Prior art keywords
self
optical system
healing coating
heating component
optical lens
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP19305165.3A
Other languages
English (en)
French (fr)
Inventor
Muriel Godeau
Mathieu Feuillade
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EssilorLuxottica SA
Original Assignee
Essilor International Compagnie Generale dOptique SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Essilor International Compagnie Generale dOptique SA filed Critical Essilor International Compagnie Generale dOptique SA
Priority to EP19305165.3A priority Critical patent/EP3693787A1/de
Priority to US17/429,848 priority patent/US20220107445A1/en
Priority to PCT/EP2020/053368 priority patent/WO2020165107A1/en
Priority to CN202080012295.8A priority patent/CN113412446A/zh
Priority to EP20704291.2A priority patent/EP3924775A1/de
Publication of EP3693787A1 publication Critical patent/EP3693787A1/de
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G02B1/14—Protective coatings, e.g. hard coatings
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C11/00—Non-optical adjuncts; Attachment thereof
    • G02C11/10—Electronic devices other than hearing aids
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/02—Lenses; Lens systems ; Methods of designing lenses
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/84—Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/013—Heaters using resistive films or coatings

Definitions

  • the invention relates to optical systems and to methods for repairing an optical lens of an optical system of the invention.
  • optical elements including optical lenses, manufactured from plastic materials has also required the development of protective coatings providing good abrasion resistance and/or scratch resistance.
  • a rather new and very interesting route for solving the problem of scratches and/or abrasion of organic glasses is to protect the lenses with coating layers able to repair themselves, i.e. coatings which would be able, when submitted to a simple physical treatment, to revert completely or partially to the initial non-scratched condition.
  • Coatings known in the art which are either a polystyrene base resin or a two-part epoxy-based resin, show interesting self-healing performances. Preliminary experimental tests carried out by the inventors have however shown that these coatings suffer either from excessive initial haze and/or from very poor scratch resistance.
  • One object of the present invention is to provide such optical systems and methods.
  • the invention proposes an optical system comprising an optical lens
  • the self-healing coating has a good initial scratch resistance thanks to the glass-transition temperature being sufficiently greater than the ambient temperature.
  • the self-healing properties of the self-healing coating may be activated thanks to the heating component.
  • the system of the invention allows repairing an optical lens in a very simple manner.
  • the method according to the invention may further comprise one or several of the following features according to any possible combination:
  • the invention further proposes a method for repairing an optical lens of an optical system according to the invention, the method comprising:
  • the self-healing properties of the self-healing coating are activated.
  • an object of the invention is an optical system comprising an optical lens 1.
  • the optical system may further comprise a spectacle frame 8.
  • the optical lens 1 may be mounted on the spectacle frame 8.
  • the optical system is suitable for use with a wide variety of eyewear, including but not limited to ski goggles, prescription goggle lenses, tactical goggles, head-mounted display, sun glasses, corrective prescription glasses, diving goggles, protective industrial eyewear such as safety glasses, firefighting protective eyewear, welding shields, helmet visors (e.g., for football, hockey, or motorcycle helmets), and paintball masks. While primarily intended for eyewear, the optical system can be utilized with other types of lenses such as the lenses of professional grade cameras or video cameras.
  • the optical system may be semi-customized or universally fitted to fit a particular type of eyewear; for example, an optical system according to an embodiment of the invention is shaped to fit within the frame of a ski goggle without obscuring the vents of the goggle, while an optical system according to another embodiment of the invention is configured to cover a major portion of the surface of the face shield of a helmet.
  • the optical system may comprise a passive wave guide and/or a passive holographic mirror and/or an electro-active element such as a liquid crystal cell, an electro-active wave guide, an electro-active holographic mirror.
  • the optical lens 1 comprises a substrate 2.
  • the substrate 2 may be made of a transparent material, for example transparent material adapted for ophthalmic lenses, including but not limited to thermoplastic materials with a glass-transition temperature above 100°C, such as polycarbonate, thermosetting resins, such as CR39®.
  • a transparent material for example transparent material adapted for ophthalmic lenses, including but not limited to thermoplastic materials with a glass-transition temperature above 100°C, such as polycarbonate, thermosetting resins, such as CR39®.
  • the substrate 2 has two opposed surfaces: a front surface and a rear surface, the rear surface being the surface intended to be the closest to the wearer's eye when the optical lens is placed before a wearer's eye.
  • a finished surface is a surface having a finished optical state i.e. having a desired curvature and no more surfacing or polishing treatment is needed.
  • some additional coatings might however be applied on this surface.
  • both opposed surfaces are finished.
  • one of the opposed surfaces may be finished while the other opposed surface does not have a desired curvature, i.e. is not surfaced.
  • lenses having finished optical state may be obtained
  • the optical lens 1 may have one or more of the following properties: a dioptric function, for example adapted to the prescription of a wearer, a light absorption function for example adapted to a sunlens, a blue cut function and/or UV protection function , a polarization function, photochromic properties.
  • the optical lens 1 may be a plano lens, for example a plano sunlens.
  • Each of the properties above may be provided by the substrate 2, or by at least one specific layer extending along the front or the rear surface of the substrate 2, or by a combination of the substrate 2 and at least one specific layer.
  • the optical lens 1 comprises a self-healing coating 3.
  • the self-healing coating 3 extends along at least part of a surface of the substrate 2. As shown on FIG. 1 and 2 , the self-healing coating 3 may be disposed directly on a surface of the substrate 2. In embodiments, the self-healing coating may be glued on a surface of the substrate 2. In embodiments, the self-healing coating may be applied on a surface of the substrate 2 through a vacuum deposition such a sputtering method or a physical evaporation under vacuum or a spin coating method.or a dip coating method. The dip coating method allows to apply the self healing coating on both faces of the substrate at the same time.
  • the self-healing coating 3 has a thickness less than 4 ⁇ m, for example less than 3 ⁇ m, such as less than 2 ⁇ m.
  • the thickness and weight of the self-healing coating 3 is negligible over the total thickness and weight of the optical system.
  • minimizing the thickness of the self-healing coating 3 contributes in minimizing haze on the optical lens 1.
  • the self-healing coating 3 has a thickness greater than 0.1 ⁇ m, for example greater than 0.2 ⁇ m, such as greater than 0.4 ⁇ m.
  • the weight of the self-healing coating 3 is minimized while maintaining a sufficient thickness to repair by creeping.
  • the self-healing coating 3 extends along at least part of the front surface of the substrate 2. Indeed, when the optical lens 1 is placed before a wearer's eye, the front surface of the optical lens 1 is more subject to scratches.
  • the self-healing coating extends along at least part of the rear surface of the substrate 2. Indeed, scratches may form accidentally on the rear surface of an optical lens for example in case of scrubbing with a rough cloth.
  • the self-healing coating 3 has a glass-transition temperature equal to or greater than 40°C. In embodiments, the glass-transition temperature is equal to or greater than 45°C.
  • the self-healing coating 3 has a glass-transition temperature equal to or smaller than 60°C. In embodiments, the glass-transition temperature is equal to or smaller than 55°C.
  • the self-healing coating 3 has a good initial scratch resistance thanks to having a glass-transition temperature equal to or greater than 40°C, that is, sufficiently greater than the ambient temperature for most applications.
  • the self-healing properties may be activated by heating the self-healing coating 3 above its glass-transition temperature without damaging the substrate 2 thanks to the self-healing coating 3 having a glass-transition temperature equal to or smaller than 60°C.
  • the self-healing coating 3 is made of a transparent material.
  • the self-healing coating 3 has one or more of the following properties: an anti-static function, an anti-fouling function, an anti-fog function, a reflection function, for example antireflective properties, a light absorption function, for example blue cut and/or UV protection, a specific color, a polarization function, an optical lens edges protection function and photochromic properties.
  • the optical lens edges protection function may include a protection of the optical lens 1 against shocks, impacts or abrasions.
  • the optical lens edges protection function may include sealing the edge of the optical lens 1 with respect to the external environment, such as moisture, solvents, oxygen, and the like.
  • the self-healing coating 3 may extend over the edges of the optical lens 1 so as to protect the edges of the optical lens 1.
  • the self-healing coating 3 may extend over the edges of the optical lens 1, forming a compressible buffer region between the optical lens 1 and a spectacle frame element of a spectacle frame.
  • a specific intermediate seal may be inserted between the edges of the optical lens 1 and the part of the self-healing coating 3 extending over said edges.
  • the optical system comprises a heating component 4 adapted to heat the self-healing coating 3 at a temperature above the glass-transition temperature of the self-healing coating 3.
  • the heating component 4 may transfer heat to the self-healing coating 3 by thermal conduction, , and/or by thermal radiation.
  • the self-healing properties of the self-healing coating 3 may be activated thanks to the heating component 4.
  • the self-healing coating 3 is made of a viscoelastic material. In other words, above its glass-transition temperature, the self-healing coating creeps under its own weight, which effectively removes any scratch or abrasion initially present at the surface of the self-healing coating 3.
  • the optical system may comprise a plurality of self-healing coatings 3.
  • an optical system may comprise two optical lenses 1, each optical lens 1 comprising a self-healing coating 3.
  • An optical system may also comprise an optical lens 1 which comprises a substrate 2, a first self-healing coating 3 extending along the front surface of the substrate 2 and a second self-healing coating 3 extending along the rear surface of the substrate 2.
  • the optical system may comprise a single common heating component 4 for all self-healing coatings.
  • the optical system may comprise as many heating components 4 as self-healing coatings 3. It is also possible that a heating component 4 comprises some means, which will be described later, common to all self-healing coatings 3 and some means specific to each self-healing coating 3.
  • the heating component may be arranged in the optical lens 1.
  • the heating component 4 may form part of the optical lens 1.
  • the heating component 4 may be in direct contact with the self-healing coating 3.
  • FIG. 3 depicts an embodiment with the heating component 4 arranged in-between the substrate 2 and the self-healing coating 3.
  • FIG. 4 depicts an embodiment with the self-healing coating 3 extending over a first zone of a surface of the substrate, and the heating component 4 extending over a second zone of said surface of the substrate, the second zone being adjacent to the first zone.
  • the heating component 4 may be glued to the substrate 2.
  • the direct contact between the heating component 4 and the self-healing coating 3 facilitates attaining and maintaining inside the self-healing coating 3 a uniform temperature adequate for repairing the self-healing coating 3.
  • the heating component 4 may comprise a resistive layer 5 and a pair of electrodes 6, 7 adapted to apply a current to the resistive layer 5 so that the resistive layer 5 heats up by Joule effect.
  • the resistive layer 5 may be in thermal contact with the self-healing coating 3 so that the self-healing coating 3 may be heated up by the resistive layer 5 by conduction.
  • the optical lens 1 has standalone self-healing properties.
  • the heating component 4 may be arranged at least in part in a spectacle frame 8. In other words, at least part of the heating component 4 may be incorporated in a spectacle frame 8.
  • the entire heating component 4 may be arranged in a spectacle frame 8 as shown on FIG. 8
  • the optical lens 1 may be a standard optical lens without a heating component 4, as shown on FIG 1 and 2 .
  • the heating component 4 may comprise a resistive material 9 adapted to transfer heat by thermal conduction to the self-healing coating 3 and a pair of electrodes 10, 11 adapted to apply a current to the resistive material 9 so that the resistive material 9 heats up by Joule effect.
  • the optical system may comprise a power supply 12 adapted to supply electrical power to the pair of electrodes 6, 7 adapted to apply a current to the resistive layer 5 or to the pair of electrodes 10, 11 adapted to apply a current to the resistive material 9.
  • the power supply 12 may comprise any kind of electrical energy production device or electrical energy storage device, including, but not limited to, solar cells, disposable batteries or rechargeable batteries.
  • the power supply 12 forms part of the heating component 4.
  • the power supply 12 may be arranged in the spectacle frame 8. In embodiments, the power supply 12 may be removable or replaceable.
  • the optical system may comprise activating means 13 and/or controlling means 14.
  • activating means 13 are means adapted to activate the heating component 4, that is, to switch on the heating component 4 so that the heating component 4 starts heating the self-healing coating 3.
  • controlling means 14 are means adapted to control the heating component 4, that is, to regulate the heat output of the heating component 4.
  • the activating means 13 and/or the controlling means 14 may be operated on demand by a person, such as the wearer of the optical system or an eye care professional. In embodiments, the activating means 13 or the controlling means 14 may be operated automatically according to one or more predefined triggers.
  • a predefined trigger may for example be related to the power supply 12, such as the start of battery charging and/or related to data sensed by a sensor.
  • the heating component 4 is inactivated most of the time to reduce electrical consumption. In embodiments, the heating component 4 is activated periodically, for example once a month.
  • the optical system may comprise an impact sensor 15.
  • the impact sensor 15 is adapted to detect the occurrence of a shock or impact on a surface of the optical lens 1.
  • the impact sensor 15 may comprise an accelerometer to detect for example a fall of the optical system on the ground.
  • the impact sensor 15 may comprise a vibration detector indicating a probability that a foreign object is contacting the optical lens 2.
  • the impact sensor 15 may be operably connected to the activating means 13, so that if a shock or impact of sufficient force to damage the self-healing coating 3 of the optical lens 1 is detected by the impact sensor 15, the heating component 4 may be automatically activated by the activating means 13.
  • the optical lens 1 may be automatically repaired in case of damage sustained due to an impact or a shock.
  • the impact sensor 15 may be adapted to trigger a warning or an indication that an impact has occurred, and the heating component 4 may be subsequently activated manually and/or automatically.
  • the impact sensor 15 may form part of the optical lens 1. In embodiments as shown on FIG. 6 , the impact sensor 15 forms a layer extending along at least part of the surface of the substrate.
  • the optical system may comprise a force sensor, not represented on the figures, adapted to detect friction prone to form a scratch on the self-healing coating 3 or to abrade the self-healing coating 3.
  • the force sensor may be operably connected to the activating means 13 so as to activate the heating component 4 when friction is detected.
  • the optical system may comprise a temperature sensor 16.
  • the temperature sensor 16 is adapted to sense or determine the temperature in the self-healing coating 3.
  • the temperature sensor 16 may for instance comprise a thermoresistance and/or a IR sensor, and/or a semiconductor sensor.
  • the temperature sensor 16 may be part of the optical lens 1 and/or of a spectacle frame 8.
  • the temperature of the self-healing coating may be accurately controlled thanks to the temperature sensor 16.
  • the temperature sensor 16 may be operably connected to the controlling means 14, so that the heat output of the heating component 4 may be regulated and the temperature in the self-healing coating 3 is maintained at or around a desired value greater than the glass-transition temperature of the self-healing coating 3.
  • the temperature sensor 16 may form part of the optical lens 1. In embodiments as shown on FIG. 7 , the temperature sensor 16 extends along at least part of the surface of the self-healing coating 3.
  • the optical system may comprise storing means, such as a memory, to store a computer program carrying instructions for performing a method according to the invention for repairing the optical lens 1.
  • the optical system may comprise communication means, such as an antenna, to receive data from a sensor or to receive a computer program carrying instructions for performing a method according to the invention for repairing the optical lens 1.
  • communication means such as an antenna
  • the invention further proposes a method for repairing an optical lens 1 of an optical system according to the invention, the method comprising:
  • the method allows activating the self-healing properties of the self-healing coating 3.

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Ophthalmology & Optometry (AREA)
  • General Health & Medical Sciences (AREA)
  • Acoustics & Sound (AREA)
  • Otolaryngology (AREA)
  • Eyeglasses (AREA)
EP19305165.3A 2019-02-11 2019-02-11 Optisches system und verfahren zur selbst-heilung einer oberflaeche einer optischen linse eines optischen systems Withdrawn EP3693787A1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP19305165.3A EP3693787A1 (de) 2019-02-11 2019-02-11 Optisches system und verfahren zur selbst-heilung einer oberflaeche einer optischen linse eines optischen systems
US17/429,848 US20220107445A1 (en) 2019-02-11 2020-02-10 Optical system and method for repairing an optical lens of an optical system
PCT/EP2020/053368 WO2020165107A1 (en) 2019-02-11 2020-02-10 Optical system and method for repairing an optical lens of an optical system
CN202080012295.8A CN113412446A (zh) 2019-02-11 2020-02-10 光学系统和用于修复光学系统的光学镜片的方法
EP20704291.2A EP3924775A1 (de) 2019-02-11 2020-02-10 Optisches system und verfahren zur reparatur einer optischen linse eines optischen systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19305165.3A EP3693787A1 (de) 2019-02-11 2019-02-11 Optisches system und verfahren zur selbst-heilung einer oberflaeche einer optischen linse eines optischen systems

Publications (1)

Publication Number Publication Date
EP3693787A1 true EP3693787A1 (de) 2020-08-12

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP19305165.3A Withdrawn EP3693787A1 (de) 2019-02-11 2019-02-11 Optisches system und verfahren zur selbst-heilung einer oberflaeche einer optischen linse eines optischen systems
EP20704291.2A Pending EP3924775A1 (de) 2019-02-11 2020-02-10 Optisches system und verfahren zur reparatur einer optischen linse eines optischen systems

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP20704291.2A Pending EP3924775A1 (de) 2019-02-11 2020-02-10 Optisches system und verfahren zur reparatur einer optischen linse eines optischen systems

Country Status (4)

Country Link
US (1) US20220107445A1 (de)
EP (2) EP3693787A1 (de)
CN (1) CN113412446A (de)
WO (1) WO2020165107A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110471196B (zh) * 2019-07-26 2020-12-01 歌尔光学科技有限公司 智能眼镜

Citations (5)

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WO2012105974A1 (en) * 2011-02-03 2012-08-09 Essilor International (Compagnie Generale D'optique) Self-healing transparent coatings containing mineral conductive colloids
WO2012177239A1 (en) * 2011-06-21 2012-12-27 Essilor International (Compagnie Generale D'optique) Optical article containing self-healing and abrasion-resistant coatings
US20140036223A1 (en) * 2011-02-03 2014-02-06 Essilor International (Compagnie Generale D'optique) Self-healing transparent coatings containing mineral conductive colloids
WO2014071179A2 (en) * 2012-11-01 2014-05-08 Thermalens, Llc Thermally influenced changeable tint device
EP3290965A1 (de) * 2016-08-19 2018-03-07 Oakley, Inc. Laminierte linsen mit beschlagschutzfunktionalität

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US9533469B2 (en) * 2008-12-23 2017-01-03 Syracuse University Self-healing product
US9129295B2 (en) * 2010-02-28 2015-09-08 Microsoft Technology Licensing, Llc See-through near-eye display glasses with a fast response photochromic film system for quick transition from dark to clear
US9016858B2 (en) * 2011-06-21 2015-04-28 Essilor International (Compagnie Generale D'optique) Optical article containing self-healing and abrasion-resistant coatings
US10822504B2 (en) * 2013-09-03 2020-11-03 Essilor International Self-healing transparent polymer compositions containing conductive colloids
US10094953B2 (en) * 2013-09-03 2018-10-09 Essilor International (Compagnie Generale D'optique) Self-healing hard coatings
CN105829798B (zh) * 2013-12-23 2019-09-10 依视路国际公司 具有滤光功能的头戴式显示器
CN205193381U (zh) * 2015-11-26 2016-04-27 浙江大学 基于电热丝智能加热的自动除雾眼镜
US20170255029A1 (en) * 2016-03-03 2017-09-07 Vision Service Plan Systems and methods for charging eyewear
EP3474797A1 (de) * 2016-06-23 2019-05-01 3M Innovative Properties Company Gehörschutz mit positions- und tonüberwachungssensoren für proaktive tongefahrvermeidung
US20200040184A1 (en) * 2018-08-02 2020-02-06 Ezat EL-SAID Self-healing polymer composition and associated uses

Patent Citations (5)

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Publication number Priority date Publication date Assignee Title
WO2012105974A1 (en) * 2011-02-03 2012-08-09 Essilor International (Compagnie Generale D'optique) Self-healing transparent coatings containing mineral conductive colloids
US20140036223A1 (en) * 2011-02-03 2014-02-06 Essilor International (Compagnie Generale D'optique) Self-healing transparent coatings containing mineral conductive colloids
WO2012177239A1 (en) * 2011-06-21 2012-12-27 Essilor International (Compagnie Generale D'optique) Optical article containing self-healing and abrasion-resistant coatings
WO2014071179A2 (en) * 2012-11-01 2014-05-08 Thermalens, Llc Thermally influenced changeable tint device
EP3290965A1 (de) * 2016-08-19 2018-03-07 Oakley, Inc. Laminierte linsen mit beschlagschutzfunktionalität

Also Published As

Publication number Publication date
WO2020165107A1 (en) 2020-08-20
CN113412446A (zh) 2021-09-17
EP3924775A1 (de) 2021-12-22
US20220107445A1 (en) 2022-04-07

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